ASTROSAT CZTI

Data Quality Report

Orbit 37248

Creation date: 2024-06-27T21:37:23.119531
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A10_123T11_9000005286_37248cztM0_level2.evt modeM0/AS1A10_123T11_9000005286_37248cztM0_level2_quad_clean.evt
Size (bytes)2,213,824,320402,560,640
Size2.1 GB 383.9 MB
Events in quadrant A16,373,3022,716,973
Events in quadrant B14,699,9002,735,340
Events in quadrant C13,228,3522,661,790
Events in quadrant D21,136,2242,433,791

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0630165
B0586845
C0528835
D0789645

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04900
B04900
C04900
D04900

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2390112315.150412%
B239014021.681938%
C239012340.979039%
D23901245210.258985%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 33976 23905 958 958 2.82% 4.01%
B 33976 23905 244 244 0.72% 1.02%
C 33976 23906 180 180 0.53% 0.75%
D 33976 23906 2277 2277 6.70% 9.52%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 15 237 3610664 6432.63 2847 2800 560.9
A 10 83 1050851 1868.62 2847 2800 560.9
A 13 248 318044 562.06 2847 2800 560.9
B 0 230 662793 1241.66 2849 2782 531.6
B 0 190 653952 1225.03 2849 2782 531.6
B 12 18 511694 957.4 2849 2782 531.6
C 15 214 1012426 1602.6 2766 2790 630.0
C 14 254 621449 982.0 2766 2790 630.0
C 0 10 385591 607.62 2766 2790 630.0
D 10 253 4931213 7534.48 2699 2624 654.1
D 1 52 1293286 1973.07 2699 2624 654.1
D 2 249 1076689 1641.95 2699 2624 654.1

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter